Steam-gage



No Model.) l I J. OCONNOR 8v (LA. TURNER. STEAM GAGE.

No. 566,613.` Patented Aug. 25, 18,96.

VvE/vrom Y mi wams www; co How-ums., WASHINGTON, u. c

UNITED STATES PATENT OEEICE.

JOHN OCONNOR AND` COLLATINUS A. TURNER, OF NEW YORK, N. Y., AS-

SIGNORS TO JOI-IN OOONNOR AND 'COLLATINUS A. TURNER, OF SAME PLACE, ANDDAVID D. TURNER, OF JERSEY CITY, NEW JERSEY.

STEAM-GAG E.

SPECIFICATION forming part of Letters Patent No. 566,613, dated August25, 1896.

Application filed March 20, 1896. Serial No. 584,128. (N0 model.)

To all whom, it may concern: which plate is arranged an annular scale 3,

Be it known that we, JOHN OCONNOR and graduated to indicate thesteam-pressure in OOLLATINUS A. TURNER, of New York city, pounds. Thescale 3 is adapted to be travin the county and State of New York, haveersed by a pointer or index 4, carried on a 55 invented new and usefulImprovemen'ts in shaft 5 arranged centrally in the casing andSteam-Gages, of which the following is a full actuated by devicescarried therein in the orclear, and exact description. dinary way.

This invention relates to certain improve- 6 indicates a sleeve ofinsulating material ments in gages'such as are used on steamlooselyembracing the shaft 5 carrying the 6o 1o boilers to indicate thepressure of the steam, pointer or index 4, and on said sleeve 6 are andhas for its object to provide a steam-gage mounted to turn bevelgear-wheels 7, 8, and having means whereby the excessive rise or 9, ofgradually-increasing diameters, the fall of the steam-pressure withinthe boiler wheel 7 being the smallest and the wheel 9 the will be atonce indicated and an alarm sounded largest. The respective wheels 7, 8,and 9 are 65 15 to give warning thereof, and also having provided withpointers or index-lingers l0, means whereby upon the rise of the steam-11, and 12 projecting radially from them, and pressure above apredetermined limit a valve each of said fingers 10, 11, and 12 isprovided or damper will be operated to reduce the draft at its extremitywith a spring-arm 13 extendthrough the iiue or chimney. ing up into theplane of and adapted to be en- 7o 2o The invention consists in asteam-gage havgaged by the index or pointer 4 as the same ing a scaleand an index arranged to travel plays over the scale 3. Each arm 13 willbe over the same to indicate the steam-pressure by preference providedwith rounded ends,so in the boiler, a contact arranged in the path thatthe least possible resistance will be ofof the index, an electriccircuit including said fered to the turning of the index 4. 7 5 2 5contact, and an electricall 7-operated device Each of the index-fingers10, 11, and 12 is controlled by the electric circuit when closed.provided with a pointed end 14, adapted to The invention also consistsin certain novel play over a scale 15 formed on the inside of featuresof the construction,combination, and the annular scale 3 andcorresponding to the arrangement of the various parts of theimgraduations over which the index 4 plays, 8o 3o proved device wherebycertain important adand, as above stated, the wheels 7, 8, and 9 arevantages are attained and the steam-gage is adapted to be turned on thesleeve 6, so that made simpler, cheaper, and otherwise better thefingers l0, 11, and 12 and the arms 13 caradapted and more convenientfor use than varied thereon may be adj usted to stand at difrious othersimilar devices heretofore emferent positions on the scale- 3, wherebythe 85 35 ployed, allas will be hereinafter fully setelectrically-operated devices maybe actuaforth. ted at different points,as will be hereinafter The novel features of the invention will beexplained. A bevel-pinion 16 is employed carefully defined in theclaims. for turning the wheel 7, said pinion 16 being,

Reference is to be had to the accompanying as shown in dotted lines inFig. 1, carried on 9e 4o drawings, formingapart of this specification,the end of a shaft 17 extending across the in which similar charactersof reference indicasing 1 at right angles to the rotative axis of catecorresponding parts in both views. the wheels 7, S, and 9, and to turnthe wheels Figure 1 is a face view of a steam-gage pro- 8 and 9 otherbevel-pinions 19 and 20 are vided with our improvements, the electricciremployed, meshing therewith and carried 95 45 cuit andelectrically-operated devices being respectively on a shaft 21 and asleeve 22 shown somewhat diagraphically; and Fig. 2 embracing saidshaft, said shaft and sleeveis a transverse sectional view taken throughbeing also arranged to extend transversely the steam-gage shown in Fig.l. across the casing at right angles to the In the views, l indicatesthe casingl of the sleeve 6. Ioo 5o gage,which may be of the usualcircular form, The central portions of the shaft 17 and of having aglass plate 2 across its front,beneath the sleeve 22 are mounted to turnin bearings 23 anc 23a arranged in the casing 1, but insulatedtherefrom, and the outer ends of said shaft 1 7 and sleeve 22 are alsoinsulated from the easing 1, being arranged to pass through sleeves ofinsulating material, as indicated at 24 in Fig. 2. The outer end of thesleeve 22 is screw-threaded, as indicated at 26, to receive a lock-nut25, whereby said sleeve may be locked in place when the wheel 9 and thenger 12 carried thereon shall have been ad j usted by turning thesleeve, and said sleeve is provided with an enlargement or head 27,whereby it may be conveniently turned. The shaft 21 is likewise providedwith a screwthreaded portion 28, on which screws a locknut 2), servingto lock the wheel 3 and index 4 against movement, and said shaft is alsoprovided with a head 30, whereby it may be turned. The shaft 17 is alsoprovided with a headed outer end and with a screwthreaded portion 31.,on which screws a locknut 32.

The casing 1 is provided with binding-posts 34, 35, and 36, thebinding-post 34 being in electrical communication with the casingitself, and through said casing with the shaft 5 and the index 4 carriedthereon. The binding-post 35 is in connection by means of a wire 37inside the casing with the insulated bearing 23 at the central portionof the sleeve 22, and through said portion and sleeve with theindex-iingers 11 and 12 and the arms 13 thereon. From the binding-post36 a wire 38 extends to the bearing 23a at the central portion of theshaft 17, so that said bindingpost 3G is connected electrically throug'hthe intervening mechanisms with the indexiinger 10 and the arm 13thereon..

The indexeiingers 11 and 12 are adapted in use to be adjusted on thescale 3 so that their arms 13 stand in position to be engaged by theindex 4 when the steam-pressure in the boiler rises or falls toits upperand lower limits, and the arms 13 on said fingers 11 and 12 formterminals for the circuit including a wire 30 extending from thebinding-post to a battery 40, from which extends a wire 41 to a bell 42,whence extends a wire 43 back to the binding-post By this arrangement itwill be seen that when the index 4 comes in contact with the arm 13 ofeither of the iingers 11 and 12 the circuit is closed through the bell,and the same is sounded to give warning' of the rise or fall of thesteam-pressure in the boiler.

The finger 10 is adapted to be adjusted so that its arm 13 oscillatesbeyond or adjacent to the arm 13 of the :finger 11 to close thebell-circuit when the boiler-pressure nears its outer limit, and whenthe index 4 comes in contact with the arm 13 of the finger 10 thecircuit is closed through an electrically-aetuated damper-operatingdevice, the construction of which is shown. in Fig. 1 and will bedescribed.

From the battery 40 extends a wire 44 and from the binding-post 36extends a wire 45,

and these wires 44 and 45 are connected with binding-posts 4G, connectedwith the terminals of an electromagnet 47, suitably mounted and providedwith an armature 43 pivotally arranged as shown at 49, and carrying aseg ment-rack 50, meshing with a pinion 51 of the stem of a damper 52,arranged. to control the iiue or chimney 53, so that when the circuit isclosed through the magnet 47 by the contact of the index 4 with the arm13 on the finger 10 said damper 52 will be swung pivotally so as toclose the flue 53, whereby the draft will be regulated and theboiler-pressure lowered. The damper 52 vill be by preference providedwith a weight on the outside, so that when the index 4 travels backwardon the lowering of steam-pressure in the boiler said damper will resumeits vertical position in the line.

From the above description it will be seen that the device is of anextremely simple and inexpensive construction and is especially welladapted for the purposes for which itis intended, since it permits thecontact device to be readily and conveniently adjusted so as to stand atdifferent positions in the path of the index of the steam-gage; and itwill also be seen that the invention is susceptible of some modificationwithout material depau ture from its principles and spirit, and for thisreason we do not wish to be understood as limiting ourselves to theprecise form and arrangement of the parts herein set forth.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- 1. The combination of a steani-gage,comprising a casing having a scale, a rotative shaft and an index on.the shaft playing over the same, a sleeve surrounding but insulated fromthe shaft, a wheel mounted on the sleeve, a contact-arm on the wheelarranged in the path of the index, a shaft extending outside the casingand geared to the wheel for turning the same, and an electric circuitincluding the generator and an electrically actuated device, saidcircuit having as its terminals the said index and contact-mm,substantially as set forth.

2. The combination of a steam-gage having a casing, a scale in thecasing, a rotative shaft and an index on the shaft playing' over thescale, wheels surrounding but insulated from the shaft, contact-a1mscarried by the wheels and arranged in the path of the iudex, a shaftextending outside the casing and having a pinion meshing with one ofsaid wheels, a sleeve on the last-named shaft insulated from the casingand also extending outside the casing and provided with a piuion meshingwith the other wheel., and an electric circuit including the generatorand an electrically-actuated device, said circuit having as itsterminals the said contactar-ms and index, substantially as set forth.

3. A steam-gage, comprising a casing having a scale, a rotative shaftand an index on IOO IIO

IZO

the shaft playing over the scale, Wheels cuit, and means operated by theeleotromag- Io mounted to rotate on the shaft, but insulated net foroperating a damper in one direction, therefrom, Contact -arms on theWheels arsubstantially as specified.

ranged in the path of the indeX, shafts eX- tending through the easingfor adjusting said AQFTSNXRTURNER Wheels and the Contact-arms, aneieotrie oir- @uit including a generator, an eleotromagnet fitnessesz insaid circuit, the above-named index and J. D. CAPLINGER, Contact-armsforming terminals for the oir- JNO. M. RITTER.

